National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
what is pollination

Ans 2:

Class : Class 5
My Answer is DPollination is when pollen of a plant travels from one plant to another by something (i.e.Insect and water). Pollens are used to grow seeds in the plant

Ans 3:

Class : Class 5

Ans 4:

Class : Class 1
D.

Ans 5:

Class : Class 4
A

Ans 6:

Class : Class 6

Ans 7:

Class : Class 6

Ans 8:

Class : Class 5
I go with Jasnoor's option. A

Ans 9:

Class : Class 5

Ans 10: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7
but the ques is wrong........if a is sitting between g and c, how is c second to the right of a ???????

Ans 3:

Class : Class 7
DB

Ans 4: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
option c is correct

Ans 2:

Class : Class 10
D as it is mentioned that the particle is travelling at a constant speed

Ans 3:

Class : Class 7
both options "C" and "D" are correct in my opinion cause as the car is moving at a constant speed there is no acceleration and as the car is being ridden on a straight road direction of movement also does not change, Hence proving that both option "C" and "D" are correct. I hope my answer was helpful. A very Happy New Year to all

Ans 4:

Class : Class 7
Both option C and option D are correct as since it is moving in constant speed, it's acceleration will be zero and the direction will not change as it was not mentioned and the particle is travelling on a straight road

Ans 5:

Class : Class 7
Both 'C' and 'D' are correct

Ans 6:

Class : Class 9
not c i think

Ans 7:

Class : Class 6
Both C and D are correct

Ans 8:

Class : Class 7
option c is correct as acceleration means change of speed

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
The correct is C

Ans 2:

Class : Class 9
I actually don't get the logic behind it

Ans 3: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 4:

Class : Class 7
Here the properties of lines and angles will be applied.Then the laws of reflection

Ans 5:

Class : Class 9
I am not able to understand it

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
0hi hi hih h hi hi hi hii

Ans 2:

Class : Class 8
ans= c

Ans 3:

Class : Class 7
The correct answer is D.

Ans 4:

Class : Class 9
yes ans c

Ans 5:

Class : Class 4
yes according to me also the answer is c but in nso practice papers it is written as d

Ans 6:

Class : Class 8

Ans 7:

Class : Class 5
Ans c

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5
the answer is d

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
yes you are right

Ans 5:

Class : Class 4
D is correct

Ans 6:

Class : Class 4
I think B and D is correct.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
C

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Subject :NSO    Class : Class 7

Which of the following statements are correct?
I. The tangy taste of cola drinks is due to carbonic acid which is an organic acid.
II. Inorganic acids are prepared artificially in the industries and are extremely corrosive.
III. Hydrochloric acid reacts with metals to varying degrees therefore, it is stored in glass bottles.
IV. Organic acids are weak acids and are used as food supplements.

A I, II and III only
B I and IV only
C II and IV only
D All of these


Why is carbonic acid inorganic even though all organic acids have carbon in their formulae and H2CO3 is the formula of carbonic acid?

Ans 1:

Class : Class 8
hcl reacts with metals too

Ans 2:

Class : Class 8
Hcl reacts with metals also

Ans 3:

Class : Class 6
Hydrocloric acid is very corrosive and reacts with metals . So HCL is stored in glass bottles because it dont causes damage to it . ..........SO 3 statement should be true and their explanation is wrong .

Ans 4:

Class : Class 8
Inorganic acids such as minerals acid like HCL , H2SO4 etc . Are. Not always made in factories . HCL is produced in our stomach.

Ans 5:

Class : Class 8
Hcl doesnt react with glass. The explanation is wrong

Ans 6:

Class : Class 7
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

Ans 7:

Class : Class 7
Q is wrong since option 1 is false, rest all are true

Ans 8:

Class : Class 8
I completely agree... The HCl reacts with metals , which is major reason of why HCl is stored in glass bottles..

Ans 9:

Class : Class 7
Hydrochloric acid reacts with metals and corrodes them and is therefore stored in glass bottles... This question is wrong and so is the explanation.

Ans 10:

Class : Class 8
Hcl doesen't react with metals......Sulphuric acid does

Ans 11:

Class : Class 5
You all are correct

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
i gave the correct answer but in the result they are showing that it is wrong.it is the same case with some other questions too.Please make a note that you correct it,thank you.

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
D

Ans 2:

Class : Class 5

Ans 3:

Class : Class 7
Stapler ( option D ) is the odd one out as it is a third class lever i.e. effort is between the load and fulcrum .

Ans 4:

Class : Class 6
What is type of Option A?

Ans 5:

Class : Class 7
The answer is D because the stapler is the odd one out

Ans 6:

Class : Class 6
option D is correct because stapler is 3rd class lever

Ans 7:

Class : Class 7

Ans 8:

Class : Class 5
yes because the stapler is a third class lever

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5

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